/** For MockWebServer. This returns the inbound SNI names. */
  @Suppress("NewApi")
  @IgnoreJRERequirement // This function is overridden to require API >= 24.
  open fun getHandshakeServerNames(sslSocket: SSLSocket): List<String> {
    val session = sslSocket.session as? ExtendedSSLSession ?: return listOf()
    return try {
      session.requestedServerNames.mapNotNull { (it as? SNIHostName)?.asciiName }